Company lists · Data refreshed November 2026

Top 25 Wastewater treatment facility contractors worldwide

RevenueBase identified 5,275 company matches for wastewater treatment facility contractors worldwide as of November 2026 and tracks 110,470 professional contacts across them, including 31,315 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for wastewater treatment facility contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for wastewater treatment facility contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
5,275Companies
110,470Contacts tracked
31,315Verified emails
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The 25 largest wastewater treatment facility contractors worldwide

Ranked by team size
Top 25 of 5,275 company matches for wastewater treatment facility contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBoston, MA, United StatesHQ recorded Nov 6, 20265,001-10,0008,143 contacts →

Exact match

“CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWabag House, IndiaHQ recorded Nov 6, 20261,001-5,0002,635 contacts →

Exact match

“WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWalnut Creek, CA, United StatesHQ recorded Nov 6, 20261,001-5,0002,553 contacts →

Exact match

“Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWalnut Creek, NV, United StatesHQ recorded Nov 6, 20261,001-5,0001,837 contacts →

Exact match

“For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAlbany, NH, United StatesHQ recorded Nov 6, 20261,001-5,0001,780 contacts →

Exact match

“CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,577 contacts →

Exact match

“Founded in 1963, Webber is a leading construction company that specializes in heavy civil, waterworks, energy and infrastructure management and is dedicated to safely providing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWest Chester, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,559 contacts →

Exact match

“Weston Solutions, Inc.(Weston) is a 100% employee-owned environmental and infrastructure services firm committed to safety and providing measurable client value.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchDhar, IndiaHQ recorded Nov 6, 2026n/a1,235 contacts →

Exact match

“Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHorsham, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,107 contacts →

Exact match

“As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPortland, ME, United StatesHQ recorded Nov 6, 20261,001-5,0001,098 contacts →

Exact match

“Woodard & Curran is more than just a consulting firm – we are an employee-owned integrated science, engineering, design-build, and operations company specializing in water and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchStockport, United KingdomHQ recorded Nov 6, 20261,001-5,000971 contacts →

Exact match

“MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCairo, EgyptHQ recorded Nov 6, 20261,001-5,000867 contacts →

Exact match

“Holding Company for Water and Waste Water is a Civil Engineering company located in Cairo Governorate, Egypt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 2026501-1,000857 contacts →

Exact match

“Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKilcolgan, TX, IrelandHQ recorded Nov 6, 20261,001-5,000731 contacts →

Exact match

“Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000711 contacts →

Exact match

“Quanta Infrastructure Solutions Group (QISG) is a recognized leader in EPC, design-build, and CMAR services for electrical infrastructure, wastewater and specialty projects…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 2026501-1,000684 contacts →

Exact match

“Water is one of our most precious resources.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchKadima, IsraelHQ recorded Nov 6, 2026501-1,000660 contacts →

Exact match

“A world leader in water treatment solutions, IDE specializes in the development, engineering, construction and operation of enhanced desalination and industrial water treatment…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDoetinchem, NetherlandsHQ recorded Nov 6, 20261,001-5,000592 contacts →

Exact match

“Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNorth Kansas City, MO, United StatesHQ recorded Nov 6, 20261,001-5,000591 contacts →

Exact match

“Garney Construction is a national leader in water and wastewater construction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSalt Lake City, United StatesHQ recorded Nov 6, 2026501-1,000588 contacts →

Exact match

“WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchGalway, IrelandHQ recorded Nov 6, 2026201-500509 contacts →

Exact match

“Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and deliver critical water and wastewater infrastructure across UK and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOttawa, ON, CanadaHQ recorded Nov 6, 2026501-1,000481 contacts →

Exact match

“Starting with a single-axle dump truck in 1952, R.W.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchOpheusden, NetherlandsHQ recorded Nov 6, 2026501-1,000464 contacts →

Exact match

“Al ruim een halve eeuw zetten we ons in voor duurzame oplossingen op het gebied van waterkwaliteit, waterveiligheid, bio-energie en industriële bouw en infra.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBroomfield, CO, United StatesHQ recorded Nov 6, 2026501-1,000462 contacts →

Exact match

“As a leading U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKolkata, IndiaHQ recorded Nov 6, 20265,001-10,000435 contacts →

Exact match

“At Ion Exchange, we bring you total environment solutions - water treatment, waste water treatment & recycle, zero liquid discharge.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 5,275 wastewater treatment facility contractors worldwide

See the full list, filter by size, metro and specialty, and access 31,315 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater treatment facility contractors worldwide at a glance

As of Nov 6, 2026
28.3%Verified-email coverage
20.9Average contacts per company
11-50Median size (employees)
1.1%Largest-city concentration · Pune
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,830
11-50
2,005
51-200
935
201-500
259
501-1,000
88
1,001-5,000
60
5,001-10,000
15
10001+
6

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for wastewater treatment facility contractors are linked below.
What qualifies
Company records worldwide whose business descriptions match “wastewater treatment facility contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 31,315 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Wastewater treatment facility contractors by location

28 lists · largest first

Every Wastewater treatment facility contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “wastewater treatment facility contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater treatment facility contractors are there worldwide?

RevenueBase identified 5,275 company matches for wastewater treatment facility contractors worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CDM Smith tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most wastewater treatment facility contractors?

The United States leads with 1,102 companies, followed by India (597) and Germany (210). Every wastewater treatment facility contractors list by country and city is linked on this page.

Which city has the most wastewater treatment facility contractors?

Pune leads with 57 company records, followed by Tehran (54) and Ahmedabad (43).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 31,315 professional contacts with verified work emails tracked across these 5,275 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.